B18B1LS1

iTrader: (12)

At those speeds bike speedos are off by a good bit.

Jeffrey

Pro Stock John

iTrader: (34)

This thread is wacko, I like it very much. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Back in early 99 I did a 3 way drag racing 'tween my 98 SS M6/4.10/boltons vs another M6 SS and a M6 C5...

Both of the F-Cars were hitting the speed limiter ~162-165mph it was pretty nasty since we were also racing... The Y-cars apparently have a high speed limiter but he did not make as much power as us so we would be able to stay pretty close... Last time I did a big run was up to 150mph but I am concerned about losing my license since I have to drive to work.

I think my Formula once it makes 700rwhp may have to try a top speed run I bet I can hit 220mph but I don't know if I can afford the tires. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

JimMueller

iTrader: (9)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:

I think my Formula once it makes 700rwhp may have to try a top speed run I bet I can hit 220mph but I don't know if I can afford the tires. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> ]</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> If you have the wallet for 700rwhp, I'd think $1200 in tires shouldn't be a problem!

I've heard that it's wiser to not worry so much about the vacuum created by lowering the car as much as it is creating downforce. You'll always have the downforce at speed...but what happens if you hit a decent bump which upsets the vacuum under the car? I'll take the downforce.

I'd use high speed tape over all the nooks and crannies on our front fascia, and extend the front grille down to within an inch or so of the ground - from wheel to wheel. It'll get chewed up a bit. I agree on removing the rear-view mirrors. Also install an air splitter under the rear of the car.

A belly pan would rock. Hopefully it'd remove without too much effort for maintenace.

Quickin

Can I make 200. I'm lowered about 1.5" all around.
I think my rev-limiter is set at 6,500.
Assume 510 RWHP.
Just curious.

Turk01SS

I'm more worried about my spine and melon staying in once piece than losing my license. That kind of speed is seriously dangerous. Remember the LeMans car that flipped twice before hitting the ground. That thing just up and flew away. No thanks. I need no part of that kind of stuff. Those speeds are for race built cars with aerodynamic packages specifically designed for it. AKA F40, Murcielago, Vector, and others. Look at the shape of those cars vs an Fbod. Our cars look like a tall brick compared to those cars. 200mph is SERIOUSLY fast. To give you an example of how fast you'd be going, get goin 140 on the highway and see how fast the traffic on the other side closes. That would be how fast a light pole would be coming at you with you doing 200... <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> screw that 140's is plenty fast for me. at least in an fbod.. gimme somethin more stable, more control, sure.. i'd go faster but not 200.

Boo Yeah

I made a car on GT3 with about 700hp and left it stock gearing down to every gear, then i ran it to 6k in 6th, well actually it never made it, so i used Gameshark to make it 60 times more powerful yeah about 40k hp, then it ran to 385 in 6th no problem.
So i figure that 385 is possible with stock gearing.


On second thought, in reall life there is so much drag and stuff you may not want to try that. Think of everything on the car and what that much force could do, as well as how unstable it could become, but if you want to realize that these cars don't have the best drag coefficient.

Blackhawk1

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by B18B1LS1:
<strong> At those speeds bike speedos are off by a good bit.

Jeffrey </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Dead on an R1 pre '03 runs 169mph top end actual(stock). All sportbike speedo's are 12 to 15% off on the high side.

If you want to confirm this go to www.sportrider.com check out all their test results to include the top end. Their top end runs are done with two seperate radars one operated by the mag staff and the second by a CHP officer.

Now if he has installed the black box(yellow in color) by Black Robotics from Aussie land then his speedo is dead acurate. Nice mod for $100.00 for a sportbike.

My two cents on hitting 200mph in an F-Body. Watched a vid on speed channel last year were they ran a number of different sports/muscle cars on Honda's eight mile oval for top end runs. The Viper was tops at 192mph stock. Blew a radiator hose off at the end of the run but none the less hit 192. Now it has a sleeker body than our cars and 410hp at the motor(correct me if I'm wrong).
Now I think if your running with some suspension and motor/exhaust/air induction mods equating to 430-450rwhp, and the car has been lowered thru a Bilstein suspension or other spring/susopension kit on stock size tires you stand a chance of hitting 200mph. But don't claim it unless you have a good video plus radar to prove it or else no one will believe you. I would also show a vid prior to the run of the radar being properly calibrated to show it has not been messed with. Not doubting you but alot of people would just claim you messed with the radar unit if you don't show it being calibrated prior to and after the run is over.

<small>[ March 19, 2003, 09:54 AM: Message edited by: Blackhawk1 ]</small>

Pro Stock John

iTrader: (34)

I don't know much about aerodynamics but if I have a good year drag racing the car I would consider doing a top speed run to 200 mph... I'm gonna run 3.50 gears and a T400 but the motor will be set up to do 7200 rpms.

I think doing it on a track would be the safest option.

I am thinkin Quickin has a shot but he'd have to mess around with the aerodynamics but he' not gutted so he's like a high 10 second car.

2001bird

200mph is possible. I have seen a f-body at the silver state races do it.

The aero mods were:
lowered about 2 inches w/ an rs body kit
removeable scaper in front about 1/4" off the ground (at the end of the race it was about 2 inches!)
no mirrors
ss spoiler
air diffuser in rear
plexi windows
no drip rails
tape everywhere
The car also did not have a belly pan, on rough course the belly pan can actually trap air under it

timelord

2001bird !! Do you know what engine and drivetrain mods he had,he would need a substantial injection of HP I would think??

Thank you!! <img border="0" alt="[USA]" title="" src="graemlins/patriot.gif" />

<small>[ March 19, 2003, 04:21 PM: Message edited by: timelord ]</small>

DONAIMIAN

iTrader: (18)

I remember seeing that car one time. I made a post in the appearance and detailing section about body kits and areodynamics. The car was an LT1 based f-bod, but it had one of the carburated gen 2 engines in it. aAt the end of the race the guy was leaking brake fluid bad from all the heat, and was still doing a good speed a couple of hundred of feet from people. He had to force it into a lower gear ripping up the trany just to get it down from speed. I think he was ridding on 16 inch rims but not sure, the tires looked like they had a lot of side wall on em to dissapat the heat better.

DONAIMIAN

iTrader: (18)

BTW:Hood pins would be a good idea too. I wouldnt dream of going over 150 without em. The vettes dont need em because the hood opens the other way. Another Idea is to get 99+ mustang, gut it, get the cobra R hood, bumper, and wing. That with some more power would be enough. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

1BadAzzBlkWs6

The guy with the R1 said he had a limiter at 186. And I know that bike speeds are off a little so maybe thats why it read 174. I know that the top-speed limiter in 5th is 5500. My rev limier is the stock 6250 so I know I can go faster as soon as I get the limter cut because it pulled up to the top speed limiter pretty good sure it wasn't quick over 150 but it slowly kept pulling. Do any of you guys know where to buy the diffuser and belly pans? Let me know if you do

timelord

Got to stop reading Big Al posts and believing them !!!!! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Tally TransAm

iTrader: (17)

1BadAzzBlkWs6


you said you were in 5th at 5500 rpms, well with stock hight tires and gears thats 166 mph, not 174, which is slightly more believable, however still not totally since you would have hit the rev limiter

ryan

trackbird

iTrader: (4)

I figured the math (purely aerodynamically) once for 200 mph. It seems to me that with a Cd of .31 and 21.5 square feet of frontal area, it would require 377 hp to go 200 mph. This does not allow for driveline friction and tire friction. I can say that my camaro stock made 299.7 hp on a dynojet in 4th gear, and when it shut off in 5th (158.1 mph per the dynojet) it was making 285.1 hp. That is about 15 hp lost to tire friction and the overdrive ratio of the gearbox (I expected more) at 158 mph. Allowing for tire drag and such, It seems possible to do 200 mph on 500 hp (tape all the body seams and at least lower the car. I won't swear that a car that is stock and only lowered will stay on the ground at 200 (probably needs an airdam/splitter at minimum)........sounds fun though...

2001bird

thats the car! looked good hugh! Your right about the 16" tires the sidewalls help to dissapate heat.

v7guy

iTrader: (1)

I had talked to a guy that saw the race from the appearance section thread, those wheels were 17s he said, but they had a taller tire on them.

He also commented the tires were hot enough you didn't want to lay your hand on them after the run.

A belly pan, from my research, is a bad idea on a street car as highway and what not have dips in them, when the car moves vertically from suspension travel the belly pan acts as a wing......the footage was already mentioned earlier

I was also informed that a rear diffuser is necessary at 180+ I believe it was.

There is not a belly pan or diffuser available for our cars now

At these speeds you'll want some way to release undehood pressure, it builds up ALOT of pressure, and is an issue that needs adressed, also a front air damn is needed to keep air from going under the car, and side skirts are nice, all this stuff should be temporary and something that can be removed when done with the run

There's a whole lot more info out there, look around

1BadAzzBlkWs6

Thanks for the info, I will be getting a Z06 when this car is paid off so 200 will be alot easier with that. But for now my quest for the 200 club is in sights when I get my Airforce bonus next year. Thanks again for the info

The Dragon

iTrader: (6)

Alright, I haven't read the posts yet but I wanted to ask this first: I wonder if the original poster of this topic read my posts on the other site and was flaming me, IMTHECEO, and SVTPoison in our high-speed runs or if he/she read it and was just genuinely curious <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
If they have no idea what I'm talking about, please disregard the above <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

No flames intended . . . I was just curious about the origin of the topic <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

<img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

I'll explain the real-world conditions/power/down-force/aero-dynamics needed to achieve the above after I read this thread <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

<small>[ March 23, 2003, 07:37 PM: Message edited by: The Dragon ]</small>